> In this Artima interview, JBoss CTO Sacha Labourey> explains the concept of a virtual database tier, and how> virtual database tools can help access data from multiple> legacy databases:> > http://www.artima.com/lejava/articles/javaone_2007_sacha_la> bourey.html> > What techniques do you prefer when you have to access> multiple legacy databases from one application?